Replace the deprecated command set-output of GitHub Actions

[eason9487]

Changes proposed in this Pull Request:

According to GitHub Actions: Deprecating save-state and set-output commands:

To avoid untrusted logged data to use save-stateand set-output workflow commands without the intention of the workflow author we have introduced a new set of environment files to manage state and output.

We are monitoring telemetry for the usage of these commands and plan to fully disable them on 31st May 2023. Starting 1st June 2023 workflows using save-state or set-output commands via stdout will fail with an error.

This PR replaces the three uses of the stdout command set-output with the GITHUB_OUTPUT environment file.

1. grow/packages/js/github-actions/actions/prepare-php/action.yml

   Line 50 in dbf518e

   run: echo "::set-output name=dir::$(composer config cache-files-dir)"

2. grow/.github/workflows/github-actions-release.yml

   Line 77 in dbf518e

   echo "::set-output name=tag_name::${TAG_NAME}"

3. grow/.github/workflows/github-actions-release.yml

   Line 129 in dbf518e

   echo "::set-output name=sha::$(git rev-parse HEAD)"

📌 Checklist after merging this PR: (@eason9487)

• Delete the testing release https://github.com/woocommerce/grow/releases/tag/actions-v1.4.1-pre
• Delete the testing tags actions-v1-pre, actions-v1.4-pre and actions-v1.4.1-pre.

Detailed test instructions:

.github/workflows/github-actions-release.yml

1. View the latest release job of version actions-v1.4.0: https://github.com/woocommerce/grow/actions/runs/4604724324
   • There are two warnings in the Annotations block.
   • The warnings come from these two positions: #1 and #2
     
2. View the testing release job of this PR: https://github.com/woocommerce/grow/actions/runs/4687795132
   • There should be no longer warnings in the Annotations block.
   • Check if its release build 3bbb75a was created successfully.
   • Check if the tag_name is passed with the right value.
     
   • Check if the sha is passed with the right value.
     

packages/js/github-actions/actions/prepare-php/action.yml

1. View a job that used the prepare-php action in GLA: https://github.com/woocommerce/google-listings-and-ads/actions/runs/4686389698
   • There is a warning in the Annotations block.
   • The warning comes from this position
     
2. View the testing job that is temporarily targeted to the test build actions-v1.4.1-pre of this PR: https://github.com/woocommerce/google-listings-and-ads/actions/runs/4688047311
   • There should be no longer warnings in the Annotations block.
   • Check if the dir is passed correctly.
     

[puntope]

✅ LGTM

thanks for the changes